• Annals of Clinical Neurophysiology
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• v.4 no.1
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• pp.56-59
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• 2002

A 28-year-old man presented with headache, fever, and myalgia. Subsequently, rapidly progressive quadriplegia with areflexia developed. CSF examination revealed moderate pleocytosis and protein elevation. MRI of brain and spinal cord showed hyperintense lesions on T2-weighted image at midbrain and ventral horns along the whole spinal cord. Serial serologic examinations of CSF for Epstein-Barr virus and cytomegalovirus were negative. Culture and neutralization tests of stool and CSF for enterovirus were negative. Although the etiologic pathogen was not identified, we diagnosed him as poliomyelitis-like syndrome by clinical features and findings of MRI.

• Journal of Korea Multimedia Society
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• v.18 no.2
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• pp.120-127
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• 2015

Mild Cognitive Impairment(MCI) is a prior step to Alzheimer's Disease(AD). It is different from AD which is seriously affecting daily life. Particularly, the hippocampus could be charged a crucial function for forming memory. MCI has a high risk about progress to AD. Our investigated research for a relationship between hippocampus and AD has been studied. The measurement of hippocampus volumetric is one of the most commonly used method. The three dimensional reconstructed medical images could be passible to interpret and its examination in various aspects but the cost of brain research with the medical equipment is very high. In this study, 3D visualization was performed from a series of brain Magnetic Resonance Images(MRI) and we have designed and implemented a competitive software tool based on the open libraries of Visualization ToolKit(VTK). Consequently, our visualization software tool could be useful to various medical fields and specially prognosis and diagnosis for MCI patients.

• Proceedings of the Korea Information Processing Society Conference
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• 2016.10a
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• pp.151-153
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• 2016

모바일 디바이스의 성능 발전에 따라 높은 연산 능력을 요구하는 어플리케이션이 증가하고 있다. 3D 프로세싱, 영상 인코팅, 벡터 이미지 처리 등 연산량이 많아 기존에 데스크탑 컴퓨터에서 처리하던 작업들이 모바일 디바이스로 이전되고 있다. 그러나 모바일 디바이스 하드웨어의 발전 속도와 상이하게 사용자의 모바일 디바이스 교체 주기는 발전 속도를 따라잡지 못하고 있다. 따라서 추가적인 비용부담 없이 모바일 디바이스의 연산 능력을 향상시키기 위해 Mobile Cloud Computing(MCC)의 필요성이 대두되고 있다. MCC는 다수의 모바일 디바이스 리소스를 통합 관리하고 자원 서비스를 제공함으로써 작업 처리 및 자원 고가용성등의 성능 향상이 가능하다. 본 연구에서는 MCC 인프라 구축 방법인 Mobile Resource Integration(MRI)와 MRI에 적용되는 오프로드 방법을 제안한다. 모바일 디바이스로만 구성된 MRI는 분산된 모바일 디바이스로 작업를 분할 전송 처리는 방법이다. 이를 통해 중거리 및 원거리 통신망 연결이 어려운 경우에 단일 모바일 디바이스의 작업 처리 대비 높은 향상 속도를 보인다.

• Proceedings of the KOSOMBE Conference
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• v.1997 no.11
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• pp.571-574
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• 1997

fMRI, functional MRI introduced recently appears based on the gradient echo technique which is sensitive to the field inhomogeneity developed due to the local susceptibility changes of blood oxygenation and deoxygenation. Common to all the gradient echo techniques is that the signal due to the susceptibility effects is generally decreased with increasing inhomogeneity due to the $T2^*$ effect or conventionally known as blood oxygenation level dependent (BOLD) effect. It is, also found that the BOLD sensitivity is also dependent on the imaging modes, namely whether the imaging is in axial, or coronal or sagittal mode as well as the directions of the vessels against the main magnetic field. We have, therefore, launched a systematic study of imaging mode dependent signal change or BOLD sensitivity as well as the signal changes due to the tilting angle of the imaging planes. Study has been made or both TRFGE sequence and CGE sequence to compare the distinctions of the each mode since each technique has different sensitivity against susceptibility effect. Method of computation and both the computer simulations and their corresponding experimental results are presented.

• Journal of Veterinary Clinics
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• v.26 no.5
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• pp.495-498
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• 2009

A female, nine-month-old Rottweiler was presented with bilateral hind limbs lameness. Physical examination, survey radiography, computed tomography (CT) and magnetic resonance imaging (MRI) were performed. Oblique fracture of L6 vertebral body and abnormal alignment was observed in survey radiographs, CT, and MRI. No significant lesion was found in the intervertebral disc adjacent to fracture site. The patient was applied by bandage and medical management including corticosteroid administration was performed. The patient was able to walk after 4 weeks and prognosis was good.

• The Journal of Internal Korean Medicine
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• v.39 no.5
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• pp.863-869
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• 2018

Objectives: The purpose of this case study was to report the effectiveness of Korean medicine treatment on severe lumbar disc herniation patient diagnosed by magnetic resonance imaging (MRI). Methods: The patient was treated with complex Korean medicine treatment, including acupuncture, pharmacopuncture, acupotomy, and Chu-na treatment. The treatment effect was evaluated by a Numerical Rating Scale (NRS), and MRI. Results: After the treatment, the NRS score of pain intensity was reduced from severe to mild degree. The volume of extruded disc in MRI images was clearly reduced. Conclusion: Korean medicine treatment might be effective in patients with lumbar disc herniation.

• Journal of radiological science and technology
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• v.20 no.1
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• pp.21-27
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• 1997

Total laryngectomy has become an usual treatment for any advanced carcinoma of the laynx, but most patients who have undergone total laryngectomy have shown permanant disability in voice production. I compared the first three formant frequencies estimated from MRI to those measured directly from speech data of the T-E patients and the normal. It was to estimate the accuracy of MRI and to compare the vocal tract shape of the normal to T-E patients. The obtained results were as follows : 1. The middle sagittle section of the MRI represents vocal tract well during pnonation. The vocal tract shape of the T-E shunt patients are lack of pharyngeal space and superior space of the glottis. 2. The length of the normal subject's vocal tract is 17 cm. For the T-E shunt patients, the length from lip to shunt opening is 17.5 cm in case 1, and 18.5 cm in case 2. That of the true resonante chamber is 13 cm and 13.5 cm for each case respectively. 3. T-E shunt patients phonated strained voice. The intensity of the higher formant frequency decreased especially in /o/, /u/. 4. The vocal tract is shortened during the phonation by T-E shunt patients. In case of /e/ and /i/, front cavities are constricted while back cavities are shortened. 5. The pseudoglottis of the T-E shunt patients is located at $14{\sim}15\;cm$ below from lips.

• Journal of Sensor Science and Technology
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• v.26 no.4
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• pp.245-250
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• 2017

A novel method to implement a birdcage-type receiving coil sensor for use in a magnetic resonance imaging(MRI) system has been demonstrated employing a flexible printed circuit board (FPCB) fabrication technique. Unlike the conventional methods, the two-dimensional shape of the coil sensor is first implemented as a FPCB and then it is attached to the surface of a cylindrical supporting structure to implement the three-dimensional birdcage-type coil sensor. The proposed method is very effective to implement object-specific MRI coil sensors especially for small animal measurements in research and preclinical applications since the existing well-developed FPCB-based techniques can easily meet the requirements on accuracies and costs during coil implement process. The performances of the coil sensor verified through $^1H$ 1.5T MRI measurements for small animals and it showed excellent characteristics by providing a high spatial precision and a high signal-to-noise ratio.

• Progress in Medical Physics
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• v.13 no.4
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• pp.234-241
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• 2002

The depth electrode technique, especially using the occipito-temporal route is widely used in the clinic, since it is known to be the most precise method about the invasive study of the mesial temporal lobe epilepsy. The depth electrode with the occipito-temporal route has been applied with manual calculation of MR images. Inherently there are some factor causing significant errors due to geometrical axis alignment, such as miss alignment of horizontal or vertical cutting line. In order to correct it in manually, it takes a long time. In this study, authors has developed the software for automate calculation of MRI wording for instance calculation and for the no time delaying operation. Authors could show that this software is useful for the clinic after applying if for 33 cases of the patients.

• The Journal of Churna Manual Medicine for Spine and Nerves
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• v.5 no.2
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• pp.1-8
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• 2010

Objectives : The propose of this study was to observe the correlation between Cervical hypolordosis and radiological result. Methods : We randomly selected among the 110 patients with X-ray and C-spine MRI films who have visited Jaseng Hospital of Oriental Medicine with neck pain. Radiographic measures of cervical lordosis and herniated disc were collected, and statistically analyzed. Results : In this study, if the finding of a X-ray showed straightening of cervical lordotic curve, based on MRI finging, the amount of herniation was more severe. Conclusions : There was a significant correlation between Cervical hypolordosis and herniated disc. Hypolordosis group complained a severe herniated disc.